Illinois requires drivers to obtain a Commercial Learner’s Permit, complete any required training, meet medical certification requirements, and pass CDL skills testing before receiving a commercial driver’s license.

Choose The Right CDL Class

Before applying for a permit, determine which CDL class matches the type of vehicle you plan to operate.

Class A CDL

A Class A CDL applies to a combination of vehicles with a Gross Combination Weight Rating of 26,001 pounds or more when the vehicle being towed has a Gross Vehicle Weight Rating exceeding 10,000 pounds.

This is the license most commonly required for tractor-trailer jobs.

Class B CDL

A Class B CDL applies to a single vehicle with a Gross Vehicle Weight Rating of 26,001 pounds or more, or a vehicle towing another vehicle that does not exceed 10,000 pounds.

Many straight trucks, dump trucks, and large buses fall into this category.

Class C CDL

A Class C CDL applies to certain vehicles used to transport passengers or hazardous materials that do not meet Class A or Class B weight requirements.

Meet Illinois CDL Eligibility Requirements

Before obtaining a Commercial Learner’s Permit, applicants must:

Be at least 18 years old to operate commercially within Illinois
Be at least 21 years old to operate in interstate commerce or transport passengers
Hold a valid Illinois driver’s license
Provide proof of legal presence documentation
Self-certify their medical driving status
Provide a medical certificate when required
Pay the appropriate licensing fees

Illinois also requires your base driver’s license to remain valid throughout the entire Commercial Learner’s Permit period.

Obtain A Commercial Learner’s Permit

A Commercial Learner’s Permit, commonly called a CLP, is required before taking the CDL skills test.

To obtain a CLP, applicants must pass the written examinations required for the CDL class and endorsements they plan to pursue.

Depending on the type of vehicle and endorsements involved, testing may include:

General Knowledge
Combination Vehicles
Air Brakes
Passenger
School Bus
Tank Vehicle
Hazardous Materials
Double And Triple Trailers

Most Illinois CDL written examinations require a passing score of at least 80 percent. School Bus applicants must score at least 90 percent.

Only Passenger, School Bus, and Tank Vehicle endorsements may be added to a CLP. Hazardous Materials endorsements cannot be placed on a Commercial Learner’s Permit.

After completing the required written testing, drivers receive a temporary permit while the permanent CLP card is processed and mailed.

Complete Entry Level Driver Training

Many first-time CDL applicants must complete Entry Level Driver Training before taking the CDL skills test.

This generally applies to:

First-time Class A CDL applicants
First-time Class B CDL applicants
Drivers upgrading from Class B to Class A
First-time passenger endorsement applicants
First-time School Bus endorsement applicants
First-time Hazardous Materials endorsement applicants

Training must be completed through a provider listed on the FMCSA Training Provider Registry.

Hold The Permit for At Least 14 Days

Illinois requires CDL applicants to hold a Commercial Learner’s Permit for a minimum of 14 calendar days before completing CDL skills testing.

Appointments may be scheduled in advance, but testing cannot occur until the waiting period has been satisfied. A CLP remains valid for one year from the date it is issued.

Prepare For the CDL Skills Test

After meeting permit and training requirements, applicants must pass the CDL skills test in a properly classified representative vehicle.

The skills test consists of three parts.

Pre-Trip Inspection

Applicants must demonstrate their ability to inspect a commercial vehicle and identify key safety-related components.

Basic Control Skills

Drivers must complete backing and maneuvering exercises that demonstrate control of the vehicle.

Road Test

Applicants must safely operate a commercial vehicle on public roads while demonstrating proper driving techniques, traffic awareness, and compliance with traffic laws.

Illinois requires scheduled testing appointments and proper vehicle documentation before testing begins.

Understand CDL Restrictions Before Testing

The vehicle used during testing can affect the restrictions placed on a CDL. Drivers who complete testing in a commercial vehicle equipped with an automatic transmission receive an E restriction, which prevents operation of commercial vehicles equipped with manual transmissions.

Drivers who do not complete air brake testing may receive an L restriction that prevents the operation of vehicles equipped with air brakes.

Certain Class A testing combinations can also result in an O restriction that limits the operation of traditional semi-truck-trailer combinations.

Understanding these restrictions before testing can help drivers avoid limitations that may affect future job opportunities.

Consider Additional Endorsements

Endorsements allow drivers to qualify for additional equipment and freight types.

Common endorsements include:

Tank Vehicle
Hazardous Materials
Passenger
School Bus
Double And Triple Trailers

Illinois issues a T endorsement for double and triple trailer combinations, although triple trailers are not permitted on Illinois highways.

Applicants seeking a Hazardous Materials endorsement must complete a Transportation Security Administration security threat assessment before receiving the endorsement.

How Much Does CDL Training Cost in Illinois?

The cost of CDL training varies based on the school, program length, and equipment used during instruction.

Private CDL schools often charge several thousand dollars for training. Some trucking companies offer company-sponsored programs that reduce upfront costs in exchange for a driving commitment after licensing.

Before choosing a school, compare:

Tuition and fees
Behind-the-wheel training hours
Equipment used during training
Endorsement training opportunities
Job placement assistance
Retesting fees and additional costs

The least expensive option is not always the best value if it provides limited driving experience or insufficient behind-the-wheel training.

What Happens If You Fail A CDL Test?

Illinois applies waiting periods after repeated CDL test failures.

Drivers who fail the same CDL examination three times must wait 30 days before attempting that examination again.

Three additional failures result in a 90-day waiting period. Three more failures after that result in a one-year waiting period before retesting. Additional testing fees may also apply.

What Happens After You Earn Your CDL?

After receiving a CDL, drivers can begin applying for jobs that match their license class and endorsements.

Many new drivers begin with entry-level positions that provide additional orientation and on-the-job training. As experience grows, drivers may qualify for dedicated routes, tanker jobs, hazardous materials work, specialized freight, and other opportunities that often require a stronger driving record and additional endorsements.

Frequently Asked Questions

How long is an Illinois Commercial Learner’s Permit valid?

An Illinois Commercial Learner’s Permit is valid for one year from the date it is issued.

What happens if an Illinois CLP expires?

If a CLP expires and the driver wants another permit, Illinois generally requires the applicant to complete the applicable testing requirements again and pay the required fees.

Can military experience help you obtain a CDL in Illinois?

Illinois offers military CDL waiver programs for eligible service members. Depending on military training and experience, some applicants may qualify for testing waivers.

Do you need TSA approval for a Hazardous Materials endorsement?

Yes. Applicants seeking a Hazardous Materials endorsement must complete a Transportation Security Administration security threat assessment before obtaining the endorsement.

What score do you need to pass the Illinois CDL written tests?

Most Illinois CDL written examinations require a score of at least 80 percent. The School Bus examination requires a score of at least 90 percent.

The Truck Drivers USA editorial team creates practical, driver-focused content covering industry topics, job trends, and real-world decisions that impact drivers at every stage of their careers. Each article is written to provide clear, accurate information that drivers can use.

Last updated: June 5, 2026

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